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Oct. 22, 1929. G. A. KERESTES MOTION PICTURE MACHINE Filed May 28, 1927 2 Sheets-Sheet G. A. KERESTES 1,732,755

MOTION PICTURE MACHINE Oct. 22, 1929.

Filed May 28, 1927 2 Sheets-Sheet 2 zam 63 f f a 20 6 A5 56 5 5 d I :1 a M i Z5 47 4 Z4 59 48 Z6 49 44 J? Z Patented Oct. 22, 1929 GEo'RGE A. KERESTES, or SELLERSVILLE,

PATENT" oFF cE PENNsYtvANIA; IASSIGNOR TO' BERTRAM G. CASE, OF PITTSBURGH, PENNSYLVANIA I MOTION-PICTURE MACHINE Application filed May 28,

This inventionrelates to improvements in motion picture projecting machines, and moreparticularly to a motion picture machine embodying means for stopping the movement of thefilm at intervals with a picture in the frame or gate of the machine, without stopping the machine. j I r 'In the machines of the character stated, as heretofore constructed, considerable trouble has been encountered in stopping the film feeding mechanism just at the desired instant, 1. e., when a complete picture is in the frame, without stopping the movements of other. moving parts of the machine, such, for example, as @the shutter and its actuating mechanism.=j,

, Among the objects of the present invention are, to proyideisimple and efficient means for automatically'stoppingthe movement of the film at the desired instant; to provide means coacting with the film stopping means, operable in conjunction with thefilm feed mechanism, to; permit a movement of the stopping means to arrest the movement of the film only when. a complete picture is framed; and means,- operable from a distance, for automatically stopping and starting the film feed mechanism without affecting the shutter driv-' in mechanism.

in the accompanying drawings, which lllustrate an application of my invention:

Fig. 1 is a front elevational view of a mov-' ing :picture machine embodying my invention Fig. 2, a .s'ide elevational view;-

Fig. 3,'a detail view, partly. in elevation and part1 in section, the section being takenon line IIIII of Fig. 1; t

Fig. 4:, a detail elevational view taken a right angles to the view of Fig. 3; and

Fig.- 5, a-detail elevational view, particularly showing the clutch andstop means for controlling the'movement of the clutch embodied in'my invention.

Referring to the drawings, 5 designates a bed plate, and 6 and 7 are standards or uprights entering into the construction of the machine. Standardfi is designed to carry a shelf-8 upon'which a small electric motor 9 is mounted. 10. is a band wheel designed to be 1927. serial No. 194,952.

is indicated by thenumeral12. e.

The band wheel 10 is mounted on an end of a main driving-shaft 13, the latter-ghaving its hearings on thefstandard 6. Drive shaft 13 is designed to be continuously drivenand has fixedlymountedthereoma gear 14 which meshes with a gear15carriedat one end ofa shaft 16. The opposite end of; shaft 16 carries a worm pinion 17, and worm 17 engages a worm pinion 18 disposed onan end of the shutter shaft 19. It will be noted that, by the means just described, the shutter 12 is con tinuouslydriven by the ;maindrive shaft 13 and the intermediategearing located between I the gear'14randthe shutter.-

Located inline with the main drive shaft 13, and adapted to be .driven'thereby, is a horizontally disposed drive shaft 20. Shaft 20 is designed to drive the film 21,'extending from a reel, not shown, by means-of the film feed mechanism including film wheels 22, re-' spectively mounted on shafts 23 and 24:, a pinion 25 on shaft 20 meshing with a gear wheel 26, and a vertically extending shaft 27 having worm pinions 28 arranged-to engage corresponding pinions 29 carried on the respective shafts 23 and24. '1

In the construction illustrated, and in addition to the film feed mechanism described, I provide a film beater device 30, for imparting an intermittentmovement to the 'film and causing each successive picture to be moved into register with the frame. opening. The heater is mounted on acrank 31, carried on an end of a shaft31, which extends through the standard 7 and has a pinion 32 thereon designed to engage gear Wheel 26 on the driven shaft 24. The heater 30 operates in conjunction with the film,.so that upon each revolution of the beater a complete picture will be positioned over the opening of the frame or gate. The frame; 35, which maybe of the usual'or-any preferred construction, is "sup ported from the standard 7 and is provided with a gate or opening 36.

In machines of the character to which this invention relates, it is of the utmost importance to provide means for automatically stopping; thei film',Ilfeedingrnechanism at the desired-insai1t,' namely, only" when a. complete picture is in the opening of the frame,

apd the present invention is particularly di- 10 rected to accomplishing this purpose.

The means illustrated for accomplishing the end just mentioned include a clutch mechanism, means for actuating the clutch mechanism, and means for preventing the operation of the clutch mechanism, to arrest the move; n'ier'it of the film fee'd' mechanisn'i, uiitil' the desired instant. These several mechanisms willnow' h" d'e scribedi slid mimou'fitd onthe inner end of the 6? dr'ix're sha ft""13',-is" a clult'ch me mber designated geae a-ny b'y the numeral 37";isaid"memberfis ke'yed toth'eshaftj 1 3 and; as illustrated, includes a hub poi"tidfiaaiid tii o annular men b'els dr'dis'ks 'b ahdfc carried on'jth'e' has and spaced ficiii'eacii other? Member c is' prov i ded with: a g jec'ting' lug d adapted to be mjov'edfinto an 'out of eiigagement' with a liig' 'of a'riother c'lii'tch' membe'r' 3 hfi:-:ed to the driven' shat 2O; The clutch memberSI',

- as shown "is designedwg be moved into and oucqfroperativeengagement with member 39 by'eleo trb majg'neticIneiiiisand mechanism inter posedfbtwen-the cameo of a solenoid 41 andthe saidielu'toh member; The said interp'osed mechanism includes. a d'epeiiding' bar or =link 49r pivotally attached 'at one end to the core 40, and atitdpposite end pivo'tally connected-with a" link 43"carried' on an end of a ro'ek shaft44 disposed in "a bearing49' 46 su pp'orted oii the standard fij j 4 Rock-shaft-44, atits-other end, carries a forked member '46 adapted to engage a pi n 47- projecting from a idrizontailly"reciprocab'le shaft 48',thelatter also being support ed'in bearing 49 onthe standard 6. Shaft 48 has's'eciiredtb its'inner end 'a'clutch member en'gagi'ng element 50. This element 50 has a vertically extending:portionforked at its upper end to provide arm'sfl51 adapted to be entered in the space-between thespaced-apa'rt members?) and cof the s lidable clutclrmember 37: 1 I Y I I Pivotally cohnected"with"the' base of the machine, at 52, is'a' vertically extending:

55 meniber ffiii carryingvat its upper end a stoplug 5 4. Member 53' is connected vith element 50 bya linlr 54 and-'is'fnioved with elem'e'nt'50 to 'carrv 'the stop-lug? 54; into and out of tli'e path of travel-of the lug e of clutch ca m'err'1be'r=39, td'p'reVen't any rotation, due to 1noinent-uin;'of drivenshaft 20 after the slid able clutch 1nerribr 37hasfbeen moved out of engagement with elutch'elen'i'ent-39l The meansfor preventiiig-the'cperation of 4 the"clutch-'=Iifembers; to 'arre'st'the movement of the film feed mechanism,- except at the desired instant, as illustrated and as preferred, include a blade-like detent member 55 secured to and movable with a rock-member 56, supported from the standard 6, and arms 57 projecting f rom the roclrl me'm ber anfd arranged to engage and be actuated by a cam 58 fixed on the main drive shaft 13.

B ad m er 5 aarranged edi eettte the slidable clutch element 37 and in the path of the sliding movement thereof when iniits lowered position and out of said path when in its raised position. 59 designates aspring Wireelementhaving one end rigidly secured to the rock member 56 and its other cind looselyat tached. to'the stop blade iiieniv her 55. The function (if 's'p'ringelei'nenfifitl'is to prevent the blade fijom'remairiiii'g'iiifcom tact with the periphery of 'eith'e'ro'f the b" and c should saidblade"sf trilfe" either pe j ri'phe ry during the 'shiftih'g movenientof the clutch element, and tqaid iiiclzfitriirjtii blade relatively'to the said movableclutch member. i

It will be un'dr'st'ood"that"the' movement, 90. of the means for preveliting th'eslidiiig rfiovement of the clutch mechanism to releaSed position, and particularly the movement of blade member '55 is" so timedin'irelationt6 the fine feed driving mechanismahat' said member is in its uppermostposit-ion at the" instant a complete pictureis'in the Y 'fr'a'rfie. Consequently, the movable" clutch" member can never be shifted; duringi a change bf pic; tures'or when a partial p'i ':ti'1re"=is" in" the frame. The" movement of the blade 1-55 and its timing is elfe'c'tedby a cam' 58c'arried" 01'1" lhe' continuously revolving drive 'shaft 13. A

The contour ofcam58 and the'mounting thereof on drive shaft 13 is such that it func- '0); tions to raise the blade 55 fre'e' of themovable clutch member' just at the; instant the beater 30 has positioned-a complete picture in the frame opening and has moved-out of cont-act with the film. a

The electric current employed for operat-' ing the machine is obtained froni a main-line, indicated by. the numeral'6'0,"and, as illus-.' trated, the main line is connected \vith:tl 1f motor 9 and with the solenoid-541 Current for energizing-the core 40 or the solenoid-to cause it to be drawn-upvvardlyf'foiwmovlng the clutch mechanism fio disconnect the Kilm" feed'driving mechanism is obtained through conductor- 61, sivit'ch 62, and conductor :63'." Closingthe circuit leadingto the solenoid 'by the switch 62 energizes the core 401 to raise bar 4-2 and actuate the clutch movingmechanism' i including the reciprocal shaft 48: .and its clutch engaging. -member}50.i It will-be-u'nderstood that the switch 62:maybe.positiqned-' at any desired point from the 'machine, for=ex'- ample, within'convenientreach of a lecturer,-

on a platform at a'distant point fromjthe machine. a

It is evident that, in place of the beater 30 and its actuating mechanism, a Geneva. or other film movement may be employed; also, that the shifting member of the clutch may be moved otherwise than by electrically operated means.

What I claim is:

1. In a motion picture machine, a picture frame having an opening and a shutter for coaction with a film, a drive shaft, intermittent film feed mechanism, means for drivingly connecting the shutter with the drive shaft, means including a slidable clutch member for connecting the film feed mechanism with the drive shaft, means for preventing a release of the clutch to arrest the film feed mechanism except when a complete picture is in register with the frame opening including a rocking member positioned adjacent the slidable clutch member and arranged for movement into and out of the path of travel of the clutch member and a cam on the drive shaft for actuating the rocking member, and means for shifting the clutch member.

2. In a motion picture machine, a picture frame having an opening, a drive shaft, a driven shaft in line with the drive shaft, clutch means between the said shafts, a film feed mechanism operatively connected with the driven shaft, electro-magnetic means for shifting the clutch means to arrest the movement of the film feed mechanism, and stop means actuated by the drive shaft and timed relatively to the film feed mechanism to prevent a movement of the clutch to release position except when a complete picture is in the frame opening, said stop means including a rocking member having an arm movable into and out of the path of movement of the clutch means, a cam on the drive shaft, and a connection between the cam and the rocking member.

3. In a motion picture machine having a projection opening and a shutter for coaction with a film, a drive shaft, a film-feed mechanism, a clutch device for connecting the film-feed mechanism with the drive shaft, means to shift the clutch device comprising a reciprocatory shaft, a rock shaft operable to reciprocate the last mentioned shaft, means to operate the rock shaft, a connection from the reciprocatory shaft to said clutch device, a rocking member having a detent member movable therewith preventing shifting of the clutch device except when a complete picture is in registry with said opening, a positioning spring for said detent member, an operating cam for said rocking member driven by the drive shaft, and means to drive the said shutter from the drive shaft.

In testimony whereof I aflix my signature.

GEORGE A. KERESTES. 

